30 lines
969 B
Plaintext
30 lines
969 B
Plaintext
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dnl Copyright (C) 2008 Kim Woelders
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dnl This code is public domain and can be freely used or copied.
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dnl Macro to set compiler warning flags in CFLAGS_WARNINGS
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dnl Provides configure argument --enable-werror to stop compilation on warnings
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dnl Usage: EC_C_WARNINGS([LANG])
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dnl Set LANG to 'cpp' when compiling for C++
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AC_DEFUN([EC_C_WARNINGS], [
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define(ec_c_compile_cpp, ifelse([$1], [cpp], [yes], [no]))
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AC_ARG_ENABLE(werror,
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[ --enable-werror treat compiler warnings as errors @<:@default=no@:>@],,
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enable_werror=no)
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if test "x$GCC" = "xyes"; then
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CFLAGS_WARNINGS="-W -Wall -Waggregate-return -Wcast-align -Wpointer-arith -Wshadow -Wwrite-strings"
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ifelse(ec_c_compile_cpp, no, [
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CFLAGS_WARNINGS="$CFLAGS_WARNINGS -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes"
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],)
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if test "x$enable_werror" = "xyes"; then
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CFLAGS_WARNINGS="$CFLAGS_WARNINGS -Werror"
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fi
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fi
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AC_SUBST(CFLAGS_WARNINGS)
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])
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